Answers

Add 84/12 and 81/42

1^st number: 7 0/12, 2^nd number: 1 39/42

84/12 + 81/42 is 125/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   84/12 = 84 × 7/12 × 7 = 588/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   81/42 = 81 × 2/42 × 2 = 162/84
4. Add the two like fractions:
   588/84 + 162/84 = 588 + 162/84 = 750/84
5. 750/84 simplified gives 125/14
6. So, 84/12 + 81/42 = 125/14
   In mixed form: 813/14

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